This is possibly the same person as the husband of Jane Morgan. He was usually named John Jenkins but was down as James in the 1841 census. Points of similarity. John was a Glass cutter; James became a member of the Glass Sellers Company in Jan 1728. John married in 1730.
Problems with the linkage. James was a Ship agent in 1728 He was living in High Street Wapping in 1728. He was later at Tower Hill, (date not recorded - could have been soon after 1728) He was recorded as died 1859; however he paid no dues 1849-55 and so may have been 'lost' to the records